<template>
  <div class="warpper">
    <div class="toolbar" v-permission="['articles.store']">
      <el-button type="primary" plain @click="add" v-permission="['articles.store']">新增文章</el-button>
    </div>
    <div class="table">
      <el-table :data="tableData" size="small" stripe border style="width: 100%">
        <el-table-column prop="id" label="标识" width="80" align="center" />
        <el-table-column label="顺序" width="200" align="center">
          <template v-slot="scope">
            <el-input v-model.number="scope.row.order" v-if="scope.row.isEdit"></el-input>
            <span v-else>{{ scope.row.order }}</span>
            <el-button size="mini" type="success" v-if="scope.row.isEdit" @click="saveOrder(scope.row)">保存</el-button>
            <el-button v-else @click="adjustOrder(scope.row)" size="mini" plain>调整</el-button>
          </template>
        </el-table-column>
        <el-table-column prop="title" label="文章标题" min-width="200" />
        <el-table-column prop="summary" label="简要描述" width="200" />
        <el-table-column label="文章封面" width="150" height="150">
          <template v-slot="scope">
            <img :src="scope.row.img" class="avatar" />
          </template>
        </el-table-column>
        <el-table-column label="文章状态" width="100">
          <template v-slot="scope">
            <el-switch v-model="scope.row.status" active-color="#13ce66" inactive-color="#ff4949"
              @change="changeStatus(scope.row)">
            </el-switch>
          </template>
        </el-table-column>
        <el-table-column prop="category.note" label="文章类型" min-width="100" />

        <el-table-column label="操作" width="200">
          <template slot-scope="scope">
            <el-button plain @click="edit(scope.row.id)" v-permission="['articles.update']">编辑</el-button>
            <el-button plain type="danger" v-permission="['articles.destroy']" @click="del(scope.row.id)">删除</el-button>
          </template>
        </el-table-column>
      </el-table>
    </div>
    <div class="page">
      <el-pagination v-if="isPaginate" :current-page="page.current_page" :page-sizes="page.sizes"
        :page-size="page.per_page" layout="total, sizes, prev, pager, next" :total="page.total"
        @size-change="sizeChange" @current-change="currentChange" />
    </div>
    <div class="form">
      <el-dialog :title="title" :visible.sync="dialogFormVisible" :close-on-click-modal="false">
        <el-form v-if="dialogFormVisible" ref="ruleForm" :model="formData" :rules="rules" label-width="80px">
          <el-row :gutter="20">
            <el-col :span="11">
              <el-form-item label="文章标题" prop="title">
                <el-input v-model="formData.title" autocomplete="off" placeholder="请输入文章标题" />
              </el-form-item>
            </el-col>
            <el-col :span="11">
              <el-form-item label="文章描述" prop="summary">
                <el-input v-model="formData.summary" autocomplete="off" placeholder="请输入文章描述" />
              </el-form-item>
            </el-col>
          </el-row>
          <el-row :gutter="20">
            <el-col :span="11">
              <el-form-item label="文章状态" prop="status">
                <el-switch v-model="formData.status" active-color="#13ce66" inactive-color="#ff4949" :disabled="isEdit">
                </el-switch>
              </el-form-item>
            </el-col>
            <el-col :span="11">
              <el-form-item label="文章顺序" prop="order">
                <el-input-number v-model="formData.order" :min="1" label="文章顺序"></el-input-number>
              </el-form-item>
            </el-col>
          </el-row>
          <el-row :gutter="20">
            <el-col :span="11">
              <el-form-item label="文章类型" prop="article_category_id">
                <el-select v-model="formData.article_category_id" placeholder="请选择">
                  <el-option v-for="item in categories" :key="item.id" :label="item.note" :value="item.id">
                  </el-option>
                </el-select>
              </el-form-item>
            </el-col>
            <el-col :span="11">
              <el-form-item label="文章封面" style="margin-bottom: 0px;" prop="img">
                <el-upload ref="uploadAvatar" class="avatar-uploader" action="#" :show-file-list="false"
                  :on-change="changeAvatar" :auto-upload="false" :http-request="avatarUpload" name="file">
                  <img v-if="formData.img" :src="formData.img" class="avatar" />
                  <i v-else class="el-icon-plus avatar-uploader-icon" />
                </el-upload>
              </el-form-item>
            </el-col>
          </el-row>
          <el-form-item label="文章内容" style="margin-bottom: 0px;" prop="content">
            <div>
              <tinymce v-model="formData.content" :height="200" />
            </div>
          </el-form-item>
        </el-form>

        <div slot="footer" class="dialog-footer">
          <el-button @click="dialogFormVisible = false">取 消</el-button>
          <el-button type="primary" @click="saveHandle('ruleForm')">
            {{ cmdTitle }}
          </el-button>
        </div>
      </el-dialog>
    </div>
  </div>
</template>

<script>
  import CURD from "@/mixin/CURD";
  import {
    store as uploadImg
  } from "@/api/medias";
  import Tinymce from "@/components/Tinymce";
  import {
    update
  } from "@/api/article";
  import {
    index
  } from "@/api/article_category";
  export default {
    name: "articleIndex",
    mixins: [CURD],
    components: {
      Tinymce
    },
    data() {
      return {
        module: "article",
        newTitle: "新增文章",
        editTitle: "编辑文章",
        isPaginate: true,
        isUploadFile: false,
        fileReader: new FileReader(),
        isShow: false,
        imageUrl: "",
        categories: []
      };
    },
    async created() {
      let {
        data
      } = await index(1, 100);
      this.categories = data;
    },
    methods: {
      adjustOrder(row) {
        row.isEdit = true;
      },
      async saveOrder(row) {
        let data = {
          id: row.id,
          order: row.order,
          action: "order"
        };
        row.isEdit = false;
        let {
          info
        } = await update(data);
        this.fetchData();
      },
      transfromData(data) {
        let result = data.map((item) => {
          item.isEdit = false;
          return item;
        });
        return result;
      },
      saveHandle(form) {
        this.$refs[form].validate(async (valid) => {
          if (valid) {
            if (this.isUploadFile) {
              // 更改了图片，则必须先传图片
              this.$refs.uploadAvatar.submit();
            } else {
              this.save(form);
            }
          } else {
            this.$message.error("数据填写错误，请按照要求重新填写");
          }
        });
      },
      async save(form) {
        this.$refs[form].validate(async (valid) => {
          if (valid) {
            try {
              if (this.isEdit) {
                let {
                  update
                } = require(`@/api/${this.module}`);
                let {
                  info
                } = await update(this.formData);
                this.$message.success(info);
              }
              if (this.isNew) {
                let {
                  store
                } = require(`@/api/${this.module}`);
                let {
                  info
                } = await store(this.formData);
                this.$message.success(info);
              }
              this.fetchData();
              this.isEdit = false;
              this.isNew = false;
              this.dialogFormVisible = false;
            } catch (error) {
              let result = error.response.data;
              this.$message.error(result.info);
            }
          } else {
            this.$message.error("Data verification error, please input according to the specified rules");
            return false;
          }
        });
      },
      async avatarUpload(options) {
        const file = options.file;
        if (file) {
          this.fileReader.readAsDataURL(file);
        }
        this.fileReader.onload = async () => {
          const formData = new FormData();
          formData.append("file", file);
          uploadImg(formData)
            .then((res) => {
              const {
                data
              } = res;
              this.formData.img = data.url;
              this.save("ruleForm");
            })
            .catch((err) => {
              options.onError(err);
            });
        };
      },
      changeAvatar(file, fileList) {
        const reader = new window.FileReader();
        reader.readAsDataURL(new Blob([file.raw]));
        reader.onload = (e) => {
          this.formData.img = reader.result;
          this.imageUrl = reader.result;
          this.isUploadFile = true;
        };
      },
      async changeStatus(row) {
        let tips = "";
        if (row.status) {
          tips = "是否启用该文章?";
        } else {
          tips = "是否禁用该文章?";
        }
        this.$confirm(tips, "提示", {
            confirmButtonText: "确定",
            cancelButtonText: "取消",
            type: "warning"
          })
          .then(async () => {
            let data = {
              id: row.id,
              status: row.status,
              action: "status"
            };
            let {
              info
            } = await update(data);
            this.$message.success(info);
          })
          .catch(() => {
            this.$message({
              type: "info",
              message: "已取消删除"
            });
          });
      }
    }
  };
</script>

<style>
  .table,
  .toolbar,
  .page {
    margin: 20px;
  }

  .toolbar {
    margin-top: 10px;
    padding: 5px;
  }

  .table {
    margin-bottom: 10px;
  }

  .page {
    margin-top: 10px;
    text-align: center;
  }

  .avatar {
    width: 50%;
    height: 50%;
    display: block;
  }

  .avatar-uploader .el-upload {
    border: 1px dashed #d9d9d9;
    border-radius: 6px;
    cursor: pointer;
    position: relative;
    overflow: hidden;
  }

  .avatar-uploader .el-upload:hover {
    border-color: #409eff;
  }

  .avatar-uploader-icon {
    font-size: 28px;
    color: #8c939d;
    width: 178px;
    height: 178px;
    line-height: 178px;
    text-align: center;
  }
</style>